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Finding the Fourth Proportional to 312,392.48, 431,102.40 and 169,154.24

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Solution

The fourth proportional to 312,392.48, 431,102.40 and 169,154.24 is: 233,433.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,392.48 : 431,102.40 = 169,154.24 : x
  2. Step 2: Convert to fraction form
    312,392.48/431,102.40 = 169,154.24/x
  3. Step 3: Cross multiply
    312,392.48x = 431,102.40 × 169,154.24
  4. Step 4: Simplify right side
    312,392.48x = 72,922,798,834.18
  5. Step 5: Solve for x
    x = 72,922,798,834.18/312,392.48
  6. Step 6: Final answer
    x = 233,433.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.